AFTER I DO AN INITIAL ALAIGNMENT A DCC ALIGNMENT AND MEASURE ALL THE FEAUTRES HOW THEN DO I ALIGN THS PROGRAM TO MATCH MY BLUEPRINT IN ORDER TO DEMINSION CORRECTLY?

IM SORRY THE A-1,A-2 AREACTUALLY FACING IN THE -Y DIRECTION JUST SITUATED SO THEY ARE AT THE TOP OF THE PART IN THE Z+ DIRECTION.

You don't define datums for legacy dimensions, they are dependent on the current alignment.  What version of PC-DMIS are you using?  It will be much easier to do the majority of the GD&T shown on your drawing if you use the geometric tolerance command (or XactMeasure in versions prior to 2020 R2).  

This one in particular will be extremely difficult to do correctly using legacy dimensioning...

IM USING 2023.2 ILL TRY TO GO THAT ROUTE SO FAR IVE GOT MY DATUMS CREATED THE OFFSET PLANE AN IM WORKING ON THE 2D BEST FIT FOR DATUM D BUT THE CIRCLE IT KEEP CREATING IS PERPENDICULAR TO THE SET OF HOLES ANY IDEA WHY??

IFIGURED OUT THE 2D BF CIRCLE PROBLEM

You don't construct a BF circle, you add a 2D best-fit of the 3x Cylinders to the alignment command.  So, for the A-B|C datum reference frame, you would level to the A-B offset plane and then click the "Best Fit... button.  Then in the Best Fit dialog, you would select the 3 cylinders from the feature list, select 2D from the type drop-down, select the workplane that you previously levelled to from the "2D Plane" drop-down, select the type of fit you want (vector Min/Max), hit compute and then OK.

OK THANKS FORTHE HELP

OK SO EVERY TIME I ATTEMPT TO DEMINSION A PROFILE I GET A RED WARNING MESSAGE STATING 

" MULTIPLE FEATURE DATUM ERROR. THIS MAY BE CAUSED BY INORRECT NOMINALS (X,Y,Z,OR I,J,K VECTOR) OR AN UNSUPPORTED COMBINATION OF FEATURES. DATUM REFERENCE A-B "

Are planes A and B nominally parallel to each other (same i,j,k vectors) ?

THAT FIXED IT THANKS AGAIN FOR ALL YOUR HELP IDK WHAT ID DO WITH OUT IT

Neil, can you tell me why a best fit would help here? I still struggle to know when a best fit alignment would be helpful. Sometimes it's obvious and sometimes not.

Thanks

Datum C is a pattern of 3 holes so you need to best-fit all 3 to control rotation and translation.  A lot of people make the mistake of simply constructing a circle through the centres of the holes but that is wrong because it cannot control the rotation - you can only origin on it.

Datum C is a pattern of 3 holes so you need to best-fit all 3 to control rotation and translation.  A lot of people make the mistake of simply constructing a circle through the centres of the holes but that is wrong because it cannot control the rotation - you can only origin on it.

Okay, I see now. Thanks